anyone have used the ggb exhaust for a predator? or on another like a scrambler 500 they are stainless with no packing. want a decent exhaust like the thought of no packing. they sold this exhaust line to mbrp. see alot of guys ran them on sportsman 800 on the high lifter sight but that is a twin was hoping to here what a single thumper motor sounds like any help would be great